Enabling Proxy Arp - Cisco IE-4000 Software Configuration Manual

Configuring IP Unicast Routing
Configuring IP Addressing
DETAILED STEPS
Command
1. configure terminal
2. interface interface-id
3. no shutdown
4. arp {arpa | snap}
5. end
6. show interfaces [interface-id]
7. copy running-config startup-config
To disable an encapsulation type, use the no arp arpa or no arp snap interface configuration command.
EXAMPLE
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# interface gi0/2
Switch(config-if)# arp arpa
Switch(config-if)# end

Enabling Proxy ARP

By default, the switch uses proxy ARP to help hosts learn MAC addresses of hosts on other networks or subnets. Follow
these steps to enable proxy ARP if it has been disabled.
BEFORE YOU BEGIN
Review the Configuring Address Resolution Methods, page
DETAILED STEPS
Command
1. configure terminal
2. interface interface-id
3. no shutdown
4. ip proxy-arp
5. end
6. show ip interface [interface-id]
7. copy running-config startup-config
To disable proxy ARP on the interface, use the no ip proxy-arp interface configuration command.
Purpose
Enter global configuration mode.
Enter interface configuration mode, and specify the
Layer 3 interface to configure.
Enable the interface if necessary. By default, UNIs
and ENIs are disabled and NNIs are enabled.
Specify the ARP encapsulation method:

arpa—Address Resolution Protocol

snap—Subnetwork Address Protocol
Return to privileged EXEC mode.
Verify ARP encapsulation configuration on all
interfaces or the specified interface.
(Optional) Save your entries in the configuration file.
End with CNTL/Z.
803.
Purpose
Enter global configuration mode.
Enter interface configuration mode, and specify the
Layer 3 interface to configure.
Enable the interface if necessary. By default, UNIs and
ENIs are disabled and NNIs are enabled.
Enable proxy ARP on the interface.
Return to privileged EXEC mode.
Verify the configuration on the interface or all interfaces.
(Optional) Save your entries in the configuration file.
806